'SXSW' is becoming more of an all-star game than a festival for undiscovered music, and this was proven again last week.

50 Cent was on stage Friday night performing his entire 'Get Rich Or Die Tryin' album, when Eminem jumped out to help him out.

They both rhymed to 'Patiently Waiting' alongside each other, then closed the show with 50's freestyle, 'Till I Collapse,' 'Don't Push Me' and Eminem's 'Crack a Bottle.'

50 Cent & Eminem 'SXSW 2012'